This Sunday, "This Week" analyzes the fragile cease-fire between Israel and Hamas, the battle over Benghazi, and the negotiations on the fiscal cliff-hanger, with Sen. Lindsey Graham, R-S.C., and Sen. Dick Durbin, D-Ill.

After a tense and violent week in the Middle East, a truce is reached between Hamas and Israel. But how long will it last, and has Hamas emerged stronger from the conflict? Will ongoing questions over what happened in Benghazi impact President Obama's second-term cabinet selections? And will there be any breakthroughs in the high-stakes talks over the fiscal cliff, as the year-end deadline draws closer?

Armed Services Committee member Sen. Lindsey Graham and Foreign Relations Committee member and Senate Majority Whip Sen. Dick Durbin speak to George Stephanopoulos this Sunday, only on "This Week."

Plus, actor and director Ben Affleck, founder of the Eastern Congo Initiative, and Rep. Adam Smith, D-Wash., come to "This Week" to discuss renewed fighting between rebels and government forces in war-torn Central Africa. With fears over escalating violence and a potential humanitarian crisis in the Democratic Republic of Congo, Affleck speaks to George Stephanopoulos about his call for the United States to engage with regional leaders for a cease-fire.

Then, the "This Week" powerhouse roundtable debates all the week's news and politics, with political strategist and ABC News political analyst Matthew Dowd, TIME Magazine's Joe Klein, Washington Post columnist Ruth Marcus, Wall Street Journal columnist Peggy Noonan, and The New York Times' David Sanger, author of "Confront and Conceal."

And what does a pair of buzz shears have to do with bringing bipartisanship to Washington? Sunday on "This Week," two party flacks are setting aside their differences by settling a hair-raising political bet – and it all benefits a good cause. Democratic National Committee spokesman Brad Woodhouse and his Republican counterpart, Sean Spicer of the Republican National Committee, team up to support the St. Baldrick's Foundation, a national group that raises money for childhood cancer research grants by shaving the heads of volunteers. Woodhouse and Spicer have both agreed to lose their locks for charity, and – with a little razor help from ABC's Jonathan Karl – you can catch their hair-raising transformation Sunday on "This Week."

See the whole political picture, Sunday on "This Week with George Stephanopoulos."